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PROCEEDINGS OF THE NATIONAL MUSEUM 



VOL., 



and ending acutely in Sisypa and more bluntly in Climacia. hesti 

 (1921, fig. 101) has figured the terminal antennal segments of 

 fuscata. 



The pronotal collar (subsegment, pseudosegment) is distinct. T ■ 

 tubercles are longer, more elaborate on some of the segments. Thi ; 

 are more body setae. Additional pau's on the head include one st, 

 between the ocelli of each eye, a median pair on frons near vert 

 and a pair on clypeus ventrally. Sometimes a sixth pair is visij 

 on the vertex near the pronotum (calif ornica) . 



Ventrally on the head, the more posterior setae adjacent to li 

 eye appear small in areolaris, and larger in californica and vica 

 (fig. 3,e). a third seta-bearing tubercle has been added on the plaj 

 of the two dorsal rows of setae of the mesonotum and metanoti 

 in the four species (vicaria, fuscata, areolaris, californica). On 

 dorsal plates of the abdomen there is an additional pair of setae, ( 



Table 3. — Comparison of lengths of segments in right and left antennae of a tk 

 instar larva of Climacia areolaris 



Right antenna 

 Segment 2 longest 



Segments 3-5, 9, 11-13 about equal, 

 and one-third length of segment 2 



Segments 6-8, 10, shorter than seg- 

 ments in above group 



Segment 14 second longest, about 

 half length of segment 2 



Segment 15 tapered, acute apically, 

 about half length of segment 14 



Segment 16 very narrow, acute apically, 

 about half length of segment 15 



Left antenna 



Segment 2 equal to segments 2 ] 



3 of right antenna 

 Segments 3, 6, 10, 11 shorter t 



segments 4, 5, 7-9 



Segment 12 second longest 





Segment 13 tapered, acute apicd 

 about half length of segment 12 1 



Segment 14 very narrow, ao 

 apically, about half length of 

 ment 13 



on either side of the median line. Thus, in the third-instar lai 

 the two dorsal rows of setae are borne on plates on the prothorH 

 and first seven abdominal segments, with five to six (the sixth sfi, 

 X, fig. 5,A-c) setae on the prothoracic plates and three each on le 

 meso thoracic, metathoracic, and abdominal plates. On the eig'h 

 segment the dorsal setae are on enlarged tubercles, each beai g 

 three long setae. On each side of the middordsal line of the eig.ih 

 abdominal segment of areolaris is a seta on a distinct, minute tuber e. 

 These were difficult to see in the vicaria and californica larvae; tbse 

 of vicaria are not on tubercles, but sessile and short. The two lat( il 

 rows of tubercles bear three long setae each on the mesothorap, 

 metathoracic, and first seven abdominal segments. On the eig.h 

 segment, there is a pair or tubercles on each side, the larger of the 1,^ 



